I’m with the dealership on this one. Jeeps can handle some mud and water, but the owners manual specifies the max fording depth, and beyond that you’re on your own.
If you don't want people mudbogging in their fancy jeeps, you shouldn't name the option package after a river. Jeep has gone downhill and stayed that way ever since they started with the whole "trail rated" scam.
The “Rubicon” is named after the Rubicon jeep trail, which is a rock-crawling trail.